Tool



0. K. BOGSTRAND.

TooL. APPLICATION FILED DC.8. 192|- l 1,439,932@ Patented Oct. 3, 1922.,

l/Vl/E/VTOR y I A TTOH/VE VS Il! l...

. An. l I4. r

t To all whom it may concern Y Patented @et 3, i922.,

unire' stares raam smear entice.

ein n. rossmann, 4or encontra, anw rena.

Toon i .f

Application `iled. December 8, 1921. Serial No. 520,972.

'Be it known that l, Ons K Boes'rRANn, a citizen of the United States, and a resident ofthe city of New Yorkl borough of1 Brook,

lyn, in the county of ingskand State of New York, have invented `a new and lmproved Tool, of which the following is a full7 clear, and exactv description. t

rihis invention hasrelation to tools and refers `more particularly to an impirovenient in tools for thelaying of decks, flooring, or the like, and for the refinishing or repairing ofthe saine. 1 l 1 The present invention contemplates aitool which includes a number of elements or parts capable of association and adjustment to render the same useful for various purposes in the laying or repairingof decks or fioors.v y 1 i i Primarily certain ofthe elements or parts are adapted to be associated for initially and simultaneously forming a various diameters arranged in axial prolongation respectively for the reception of the threaded portion of the shank, the smooth portion of the shank, and the headand filler,`

nder the present practice when a deck has become worn to a point where the nails, screws or other fastening elements are eX- posed, a new deck is required as it isprac-` tically impossible to repair the worn one without inarring the boards which go to make up the deck. The diiculty experienced inV attempts to repair the deck lies in the fact that the driving of the nails or screws a sufficient further distance below the surface of the deck to reinsert new plugs invariably results in the chipping or splitting or otherwise marring the lsurface adjacent the screw` or nail head.

As a further object the invention therefore contemplates a tool of the character .described which affords means` for cutting an annular recess concentric to the nail'or screw head to admit of the drivingof the same further downward without marring the surface adjacent the said opening or to permit of the `removal of old fastening elements and the insertion of new ones. i

As a still further object the invention contemplates a -tool ofthe character described which may be employed for the lre'm'oval of screws having broken headsq whichmay fbe employed as a guard for driving the nail screwifreceiving opening including a plurality of bores of` or screw further d own for the insertion of anew plug and which includes telescopic elements which function as guides for the cutting of the concentric groove heretofore explained. i i ".VVith the above recited and other objects intview, the invention resides inthe novel construction set forth in the following speci-v fication, particularly pointed outin the appended claims and illustrated in the accompanying drawings, it being understood that the right is reserved to embodiments other than those actually illustrated herein to the full extent indicated by the general meaning ofthe terms in which the claims are eX pressed. y

`In the drawing- Figure 1 is a side view ofthe tool with parts broken away and shown in section,

illustrating the adjustment and arrangement of the parts thereof for the cutting' of for the cuttingof an annular groove con` centric 'to the nail orscrew head for the purpose of withdrawing or removing the same. Fig'. 5 is'a bottom planview of the tool. F ig. 6 illustrates a screw receiving opening formed by means of the tool.

` Referring to the drawings by characters of reference the tool comprises an outer7 intermediate and inner sections 10,' ll and 1 2. The outer section l0 is of cylindrical formation and is formed at its upper end with a remov' able closure head 13 provided with an axially ilnojecting shank lei whereby the tool may beiA associated .with a suitable form of brace for rotating thetool when desired. The outer section is provided at its lower extremity with a circularcutting edge i5, internal cutting teeth 1G anda series of inner spiral convo` lutionsl? of gradually decreasing` diameters from the outer or lower end of the section toward'the inner'end thereof. lThe interme` diate section lliis also of cylindrical formation and is )rovidedat its `upper ond with .i

an integralv ead; lSgfor lclosing thel saine. The head 18Y isvof adiameterto snugly fit within the section l() for guidingand maintaining the section 11 in axial. alignment within they outer section. The sectionK 11 1s open at its lower end and provided with external cutting teeth 119,. for the purpose` of,

forming a bore of a. diameterto snugly fit the smooth shank of a screw, while the c1rl cular cutting edge 15 serves as a means for cutting a bore of a larger diameter to receive the head of a screw. The inner section 12 is preferably of solid formation andl is formedv at itsupper edge with anintegr'al` head 20- of an appropriate diameter to "be snugly received within 'the bore of the in-` termediate section 11 for the purpose yof guiding andy maintaining the inner section 12. in axial alinement. The lower portion ofthe section 12 is termed to provide" abit 21v having the projecting lead'screv7 22 at its lower or outer end, saidV bit being em?A ployed" for the purpose of forming abore within which the threads ofl the threadedv portion of the shank ofk a screw will propfl erly engage for anchoring the screw in poprojection of the section 12 from saidf'interJ may receive and coact with the extremity'Q? e mediate section.

In order to provide means tor locking and retaining the. sections 1.0 and 11- in relatively adjusted positions, set screws 25 and 26 are employedfwhich extendthrough the section 10. and are provided with external manipulating heads. llheV inner ends of the set screws are provided with reduced. projecting extremities 27. The section 11 is provided with a. recess 28 adjacent the head 13o which of either of the screws 25 or 26 yfor the pur'- pose of retaining and locking the section 11 in either its projected or retracted position as illustrated. respectively in Figs. 1Y and 2. TheI section 11 is further provided with an annular shoulder 29above which an annular groove 30 is provided to form a second shoulder 31.. In spaced relation and above the groove 30 is a recess32 which communicates with the annular groove 30 by a longitudinal groove 33 ot less depth than the depth of the recess 32 and the annular groove 30. The purpose of said grooves and recesses will be hereinafter set forth. In order to provide meansi'or locking and maintaining'the inner section 12 in various projected orretracted positions with respect to the section 11, a plurality of recesses 35 are formedV .inthe shank of'said section 12-with which` the inner extremity 36 of a set screw 3T coacts, the said. set screw extending through vor recesses; 47.

the. section 11 and provided with. an outer or exposed kerf 3.8 or other `manipulating means.` In 'addition to the recesses 35 the shank of the section 12, is provided with an intermediate annular groove 39 which is in turn provided with a longitudinal groove 40 which terminates at its upper end in a recess 41, thek purpose of which will be hereinafter set forth.

To employ the tool in` its capacity for forming a Ascrew-receiving opening as illustrated 1h Fig. 6, the reduced extremity 27 of;

the set screw 26 is arrangedy in the recessv 28 as illustrated in Fig. 1, to lockI and retain the section 11 in partially projectedrelation, at vthe samev time the extremity 36I of the set screw 37 is arranged: in one of the recessesm35 o flthe shank ofthe innermost section 12. yIt will thus be seen that three cutting element-s, namely, the circular cutting edge 1.5' and cutting teeth 1 6 of the section 10,V the externall cutting teeth 19 of the section 1v1Y and the bit 21 ofthe section 1-2 are arranged in axial prolongation. The shank: 14 is then asso ciated with a brace and is employedorsimultaneously forming a. screw-receiving opening as illustrated in Fig. 1 which includes an inner bore A, an intermediate bore B, and an outer bore C, the inner to receive the threaded extremity of the screw shank, the intermediate to receive thesmooth portion of the shank., and the outer to receive the head ot' the screw andthe usual forml of plug or filler element inserted thereinv over. the head. By this arrangement a single tool` simultaneously forms theV three bores, thus saving both time and labor by eliminating the three separate operations required` at the present time and necessitating the use ofthree bits ot different sizesV beingindepend.- ently used. A further advantage resides` in the fact that where three independent 'bits are used the proper alignment ot the open ino's is not accurately insured,` i

Vhere the. tool is employed for thej pur pose ot forming an opening for the reception of a nailA or a screw having an entirely threaded shank", the inner sect-ion 12. isre-` tracted within the intermediate section 1x1 andy retained in thisv position by engaging the extremity 36 of the set screw in the recess 41- thereby locking the section 12; for turning movement` lwith the intermediatesection 1.1. When usedk in this manner two bores in axial prolongation are formedwhich are suiiicient toaccommodate a screw havingA an enti-relyrthreaded Yshank ora nail. In" order to gage the Vdepth ot the cut. ofthe tool" to pro-vide the deck with uniform openings for the reception of the screws or nails, an? adjustable stop is provided embodying a 'sleeve 45 which fits over'. the outer section and which is provided with `a setv screw 46= selectively engageable within the openingsl Where the tool is employed as a means for repairing decks or floors, which have become worn to a point where the nails, screws or other fastening elements are exposed and it is desired to drive `the nails a further dis tance below the lsurface o-f the deck or Hoor to insert new plugs, the set screw 37 is re tracted until its extremity 36 is disposed in alignment with the periphery of the groove 39 to permit of relative rotation and limited longitudinal or axial movement of the section 12 with respect to the section 11. At the same time the set screws 25 and 26 are retracted to withdraw the extremities 27 thereof from the recesses 28 and 32 and the section 11 is moved inwardly and the set screw 26 advanced until the same lies within the groove 30 to permit relative rotation and axial movement of said section 11 within section 10. The intermediate and inner sections 11 and 12 are then employed in the capacity of a centering" guide and the cuting edge and teeth 15 and 16 are employed to cut an annular groove D concentric to and extending downwardly of the nail screw or other fastening device E. As the cutting edge and teeth move downwardly, the intermediate and inner sections 11 and 12 coming into contact with the head of the fastening element E will remain stationary by compressing the springs 23 and 24. As the tool is rotated for forming the annular groove D, the inner spiral convolutions 17 will engage and coact with the head of the fastening element E until the convolutions of lesser diameter engage and grip the peripheral head. By employing a lever inserted under the sleeve 45 fastening nails may readily be removed and new ones inserted. Where the fastening element E is a screw, the convolutions which have a lefthanded pitch may be employed for unthreading the screw to effect its removal. Where it is desired to drive the'same fastening element E downwardly to permit of the insertion of a new plug, the tool is retracted from the annular groove D thus formed and the inner and intermediate sections thereof to gether with the closure head 13 and springs are removed. The lower end of the outer section is then arranged as illustrated in Fig. 3 and a nail set or punch 50, together with a driving sleeve 51 are employed. ln this instance the lower end of the section 12 is redriven into the annular groove D to act as a protection or a guard to the outer edge of the annular groove D when the nail is driven home. The sleeve V51 is then removed and by hammering on the upper end of the set 50 the nail is driven downwardly until the head is substantially flush with the bottom of the annular groove. A new plug is then inserted to complete the repairing operation.

l claim:

1. A tool embodying outer, intermediate and inner sections, a circular cutting edge and internal cutting teeth at the lower end of the outer section, external cutting teeth at the lower edge of the intermediate section, a bit formed at the lower end of the inner section, means carried respectively within the outer and intermediate sections for effecting the projection of the intermediate section from the outer section and the inner section from the intermediate section, and means for retaining said sections against relative axial and rotary movement.

2. A tool embodying outer, intermediate and inner sections, a circular cutting edge, internal cutting teeth and spiral convolutions above the cutting teeth at the lower end of the outer section, said spiral convolutions being of gradually decreasing diameters, external cutting teeth at the lower end of the intermediate section, a bit formed at the lower end of the inner section, means carried respectively within the outer and intermediate sections for effecting the projection of the intermediate section from the outer section and the inner section from the intermediate section, and means for retaining said sections against relative axial and rotary movement.

3. A tool for the laying, repairing or refinishing of decks, floors, or the like, comprising relatively adjustable outer, intermediate and inner telescopic sections, lthe former having a circular cutting edge and internal cutting teeth and the latter external cutting edges disposed at the lower ends of said sections, means for eifecting axial movement of said sections to project the lower ends of the same from each other, and means for locking said sections against relative axial movement and to respectively permit or prevent relative rotary movement whereby the same may be employed for forming a multiplicity of screw-receivingI openings in axial prolongation or as a means for cutting a concentric annular groove about a fastening element for driving the same further inward or for elfecting its removal.

OLE K. BOGSTRAND. 

